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Finding the Fourth Proportional to 70,041.04, 105,081 and 38,898.16

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Solution

The fourth proportional to 70,041.04, 105,081 and 38,898.16 is: 58,358.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,041.04 : 105,081 = 38,898.16 : x
  2. Step 2: Convert to fraction form
    70,041.04/105,081 = 38,898.16/x
  3. Step 3: Cross multiply
    70,041.04x = 105,081 × 38,898.16
  4. Step 4: Simplify right side
    70,041.04x = 4,087,457,550.96
  5. Step 5: Solve for x
    x = 4,087,457,550.96/70,041.04
  6. Step 6: Final answer
    x = 58,358.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.